$(function () {
  var dom = document.getElementById("container1");
  var myChart = echarts.init(dom);
  var app = {};
  option = null;
  app.title = '环形图';

  option = {
    tooltip: {
      trigger: 'item',
      formatter: "{a} <br/>{b}: {c} ({d}%)"
    },
    color: ['#37a2da', '#ffd85c'],
    series: [
      {
        name: 'PLC',
        type: 'pie',
        radius: ['50%', '70%'],
        avoidLabelOverlap: false,
        label: {
          normal: {
            show: false,
            position: 'center'
          },
          emphasis: {
            show: true,
            textStyle: {
              fontSize: '24',
              color: '#00fcff',
              fontWeight: 'bold'
            }
          }
        },
        labelLine: {
          normal: {
            show: false
          }
        },
        data: [
          {value: vm.plc.on, name: '在线'},
          {value: vm.plc.off, name: '离线'}
        ]
      }
    ]
  };

  ;
  if (option && typeof option === "object") {
    myChart.setOption(option, true);
  }
});
